97638717390 has 16 divisors (see below), whose sum is σ = 234332921808. Its totient is φ = 26036991296.

The previous prime is 97638717377. The next prime is 97638717401. The reversal of 97638717390 is 9371783679.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627311927 + ... + 1627311986.

It is an arithmetic number, because the mean of its divisors is an integer number (14645807613).

Almost surely, 2^97638717390 is an apocalyptic number.

97638717390 is an abundant number, since it is smaller than the sum of its proper divisors (136694204418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97638717390 is a wasteful number, since it uses less digits than its factorization.

97638717390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254623923.

The product of its (nonzero) digits is 12002256, while the sum is 60.

The spelling of 97638717390 in words is "ninety-seven billion, six hundred thirty-eight million, seven hundred seventeen thousand, three hundred ninety".